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Cobb Air Oil Separator — 2004-2021 Subaru STI
performance & reliability
For heavier
The GTC-300 3D airfoil shape allows for optimal airflow that reduces drag yet supplies an effective amount of downforce
ACT Monoloc Collar - Subaru Models (inc. 2002+ WRX/STI) Mitsubishi Evo 2003-2015 PDM_drivetrain-mounts-and-bushings Cobb Air Oil Separator —The Monoloc Collar is available for those of you who want to replace the old design in the Subaru STI. ACT Monoloc Collar SPECS: Patent pending design Chromoly steel construction Makes for a great upgrade to the traditional two piece wedge collar and wire ring design Ideal to replace just before installing a clutch kit Sold individually IN CASE YOU WANT THE BEST CLUTCH COLLAR This is the ACT Monoloc Collar that is available for separate purchase for
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